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Finding the Fourth Proportional to 69,125.76, 95,388.12 and 40,826.16

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Solution

The fourth proportional to 69,125.76, 95,388.12 and 40,826.16 is: 56,336.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,125.76 : 95,388.12 = 40,826.16 : x
  2. Step 2: Convert to fraction form
    69,125.76/95,388.12 = 40,826.16/x
  3. Step 3: Cross multiply
    69,125.76x = 95,388.12 × 40,826.16
  4. Step 4: Simplify right side
    69,125.76x = 3,894,330,649.22
  5. Step 5: Solve for x
    x = 3,894,330,649.22/69,125.76
  6. Step 6: Final answer
    x = 56,336.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.